Welch Allyn quality insturments in a pocketsize set. Includes AA alkaline battery handle, and optional soft case. The 2.5V Otoscope also has built in throat illuminator- two in one insturment. This unit features halogen illumination and fiber optics for a cool light with no reflections or obstructions, plus a rectangular viewing lens for instrumentation under magnification. The 2.5V PocketScope handle has a smooth rheostat to control light intensity and features a handy pocket clip.